选中复选框时触发JAVAFX事件 [英] JAVAFX event triggered when selecting a check box

问题描述

我的JavaFx FXML应用程序存在问题。

My JavaFx FXML application has an issue.

当我在表单上选中一个复选框时，我想根据单击的复选框执行一个方法。有没有办法可以将复选框的名称传递给方法，以便我可以对它执行一些有条件的工作？

When I select a checkbox on a form, I want to execute a method based on the checkbox that was clicked. Is there any way that I can pass the name of the checkbox through to the method so I can perform some conditional work on it?

我有两个复选框，只有一个可以被选中。当我点击一个时，另一个应该被取消选择，反之亦然。显然下面的代码不起作用所以我希望传递被点击的对象的名称。

I have two checkboxes and only one can be selected. When I click on one, the other should be de-selected and vice versa. Obviously the code below will not work so I am looking to pass the name of the object that was clicked.

任何帮助都将不胜感激，
非常感谢。

Any help would be appreciated, many thanks.

@FXML private void updateRcs(){

    if (chkRcsuri.isSelected()){
        chkRcsuri2.setSelected(false);
    }

    if (chkRcsuri2.isSelected()){
        chkRcsuri.setSelected(false);
    }

}

推荐答案

您可以使用更改跟踪或使用JavaFX的事件处理机制。

使用这样的复选框，

You can use change tracking or use Event handling mechanism of JavaFX.
With checkboxes like this,

final CheckBox chk1 = new CheckBox("chk 1");
final CheckBox chk2 = new CheckBox("chk 2");

更改跟踪

chk1.selectedProperty().addListener(new ChangeListener<Boolean>() {
    @Override
    public void changed(ObservableValue<? extends Boolean> observable, Boolean oldValue, Boolean newValue) {
        chk2.setSelected(!newValue);
    }
});

chk2.selectedProperty().addListener(new ChangeListener<Boolean>() {
    @Override
    public void changed(ObservableValue<? extends Boolean> observable, Boolean oldValue, Boolean newValue) {
        chk1.setSelected(!newValue);
    }
});

使用事件处理

EventHandler eh = new EventHandler<ActionEvent>() {
    @Override
    public void handle(ActionEvent event) {
        if (event.getSource() instanceof CheckBox) {
            CheckBox chk = (CheckBox) event.getSource();
            System.out.println("Action performed on checkbox " + chk.getText());
            if ("chk 1".equals(chk.getText())) {
                chk2.setSelected(!chk1.isSelected());
            } else if ("chk 2".equals(chk.getText())) {
                chk1.setSelected(!chk2.isSelected());
            }
        }
    }
};

chk1.setOnAction(eh);
chk2.setOnAction(eh);

这篇关于选中复选框时触发JAVAFX事件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！